Gas-burning apparatus.



PATENTED APR. 26, 1904.

w. H. BRADLEY. GAS BURNING APPARATUS.

2 SHEETS-SHEET 1.

APPLIUATION FILED JUNE 18, 1903.

N0 MODEL.

WITNESSES m: mums PETE-RS 00-. Pncrtoumo. wnmwu, 0. c.

Patented April 26, 1904.

PATENT OFFICE.

WILLIAM H. BRADLEY, OF BELLEVUE, PENNSYLVANIA.

GAS-BURNING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 758,294, dated April 26, 1904:.

Application filed June 18, 1903. v

T0 at whom, it Weary concern:

Be it known that 1, WILLIAM H. BRADLEY, of Bellevue, in the county of Allegheny and State of Pennsylvania, have invented a newand useful Gas-Burning Apparatus, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a vertical longitudinal section showing one form of my improved burner. Fig. 2 is a cross-section of the same above the burner-brick and looking downwardly. Fig. 3 is a partial vertical section with the burnerbrick shown in side elevation. Fig. 4 is a side elevation, on a smaller scale, showing another form of burner. Fig. 5 is a partial longitudinal section, on a larger scale, of the form of Fig. 4:. Fig. 6 is a partial longitudinal section, the burner-bricks being shown in elevation; and Fig. 7 is a cross-section on the line V11 VII of Fig. 6.

My invention relates to the burning of fuel-' gas, and is designed to provide a cheap and effective mixer and burner by which an intense heat may be obtained and in which the air supplied to the burner may be heated by radiation from the hot gas supplied from the producer.

In the drawings, referring to the forms of Figs. 1, 2, and 3, 2 represents a gas-supply pipe leading from the producer and which may be either a gas main or branch pipe leading from said main. This pipe 2 leads to a refractory-lined valve-casing 3, having a lower port 4:, which is controlled by a vertically- Inovable valve 5, having its stem 6 extending through a hole in the top of the casing and actuated by any suitable connection. The casing may have a side opening 7 which may be closed by a gravity-door and is used for cleaning purposes.

A depending sheet-metal flue 8 surrounds the port 4 and is suitably secured to the valvecasing, and within this flue is placed a smaller and shorter sheet or plate metal shell 9, which is connected to the outer shell by a flaring collar 10 at its upper end. The annular space Serial No. 162,087. (No model.)

between the two shells forms an air-chamber which is closed at the end-next the valve and into which the air may lee-drawn through an upper side opening 11 with a suitable controldoor.- Air may also be supplied through an ordinary injector-inlet 12, leading into the annular chamber at one side and having a suitable steam-jet to force in the air. p

The outer end of the inner shell terminates short of the end of the outer shell and extends to the burner-brick 13 of cylindrical form, which fits neatly within the outer shell and is provided with a-series of outer longitudinal grooved passages 151. These passages connect at one end with the annular air-chamber and at the other end open into inlet-ports 15, leading into the interior of the hollow brick. The inner end of this brick is preferably shouldered, as shown at 16, the annular shoulder fitting against the end of the shell 9 to center and hold it in place.

In using the burners the hot gas from the producer passes through the pipe 2, the valvecasing, and the shell 9 until it reaches the ports 15, where it mixes with the air heated by conduction through the metal shell from the hot gas. The mixture then burns at the end of the burner-brick, producing an intense heat.

The valve 5 is used to control the gas-supply, and preferably is positioned to keep a back pressure within the producer in regulating the amount passing.

The burner above described is especially adapted for platte-glass-annealing furnaces; but it will be understood that it may be used for-any desirable purpose, and the burner may project in any desired directionupward'ly, downwardly, or laterally.

In Figs. 4 to 7 I show another form of the invention, wherein the supply-pipe 2' leads downwardly from the valve-casing 3 and is connected at right angles to the shell 8. The inner shell 9 and the burner-brick 13' are arranged as shown in the first form, except that the outershell and the burner-brick are closed at the end. The burner-opening 17 is formed in the side of the burner-brick and outer shell,

and the air-channels 14: of the burner-brick extend along the side opposite to that on which the burner-opening is located. I show in Fig. 4: the air-blast inlet 12 as arranged for an injector.

The advantages of my invention result from the use of the metal shells with the air-chamber between them in combination with the burner-brick. The air is effectually heated from the hot producer-gas. The device is simple and may be cheaply made, and a high heat is obtained with an economy of gas.

Many variations may be made in the form and arrangement of the shells, the air-heating chamber, the burner-brick, 850., without departure from my invention.

I claim 1. A burner for hot gases comprising a valved flue, a burner extension leading therefrom and having an outer and an inner metallic shell with an air-chamber between them, a burnerbrick within the end of the outer shell and at the end of the inner shell, and ports connecting the air-chambers to the interior of the hollow burner-brick; substantially as described.

2. A burner for hot gases, comprising an outer shell, a hollow burner-brick within its end, an inner shell forming an annular airchamber within the outer shell, an air-inlet, and supply channels for the air leading through the hollow brick; substantially as described.

3. Aburner for hot gas, comprising an outer metal shell, an inner metal shell enlarged at one end toform an annular air-chamber closed at said end, the inner shell being shorter than the outer and extending to a hollow burnerbrick within the outer shell, said brick having air-ports to admit the heated air to mix with the gas within it; substantially as described.

In testimony whereof I have hereunto set my hand.

WILLIAM H. BRADLEY.

VVitnesses:

JOHN MILLER,

M. CoRwIN. 

